package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.minio.MinioProperties;
import com.atguigu.lease.web.admin.service.FileService;
import io.minio.*;
import io.minio.errors.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;

@Service
public class FileServiceImpl implements FileService {

    @Autowired
    private MinioClient minioClient;

    @Autowired
    private MinioProperties properties;

    @Override
    public String upload(MultipartFile file) throws ServerException, InsufficientDataException,
            ErrorResponseException, IOException, NoSuchAlgorithmException, InvalidKeyException,
            InvalidResponseException, XmlParserException, InternalException {

            boolean isbucketExists = minioClient.bucketExists(BucketExistsArgs.builder().bucket(properties.getBucketName()).build());

            if (!isbucketExists) {

                minioClient.makeBucket(MakeBucketArgs.builder().bucket(properties.getBucketName()).build());

                minioClient.setBucketPolicy(SetBucketPolicyArgs.builder().bucket(properties.getBucketName()).
                        config(createBucketPolicyConfig(properties.getBucketName())).build());

            }

            String filename = new SimpleDateFormat("yyyyMMdd").format(new Date()) + "/" + UUID.randomUUID() + "-" + file.getOriginalFilename();

            minioClient.putObject(PutObjectArgs.builder().bucket(properties.getBucketName()).
                    stream(file.getInputStream(), file.getSize(), -1).object(filename).
                    contentType(file.getContentType()).build());


            //拼接对象url
//            String url = properties.getEndpoint()+"/"+properties.getBucketName()+"/"+filename;

            String url = String.join("/", properties.getEndpoint(), properties.getBucketName(),filename);

            return url;
    }

    private String createBucketPolicyConfig(String bucketName) {

        return """
            {
              "Statement" : [ {
                "Action" : "s3:GetObject",
                "Effect" : "Allow",
                "Principal" : "*",
                "Resource" : "arn:aws:s3:::%s/*"
              } ],
              "Version" : "2012-10-17"
            }
            """.formatted(bucketName);
    }
}
